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Groups > comp.lang.python > #11866

Re: try... except with unknown error types

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In <mailman.230.1313780957.27778.python-list@python.org> Yingjie Lin <Yingjie.Lin@mssm.edu> writes:

> try:
> 	response = urlopen(urljoin(uri1, uri2))
> except urllib2.HTTPError:
> 	print "URL does not exist!"

> Though "urllib2.HTTPError" is the error type reported by Python, Python
> doesn't recognize it as an error type name. I tried using "HTTPError"
> alone too, but that's not recognized either.

Have you imported urllib2 in your code?

> Does anyone know what error type I should put after the except
> statement? or even better: is there a way not to specify the error
> types? Thank you.

You can catch all exceptions by catching the base class Exception:

  try:
    some_method()
  except Exception, e:
    print "some error happened, here is the explanation:"
    print str(e)

-- 
John Gordon                   A is for Amy, who fell down the stairs
gordon@panix.com              B is for Basil, assaulted by bears
                                -- Edward Gorey, "The Gashlycrumb Tinies"

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try... except with unknown error types Yingjie Lin <Yingjie.Lin@mssm.edu> - 2011-08-19 15:09 -0400
  Re: try... except with unknown error types John Gordon <gordon@panix.com> - 2011-08-19 19:14 +0000
    Re: try... except with unknown error types Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-20 06:13 +1000
      Re: try... except with unknown error types John Gordon <gordon@panix.com> - 2011-08-19 20:24 +0000
        Re: try... except with unknown error types Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-20 06:45 +1000
          Re: try... except with unknown error types Seebs <usenet-nospam@seebs.net> - 2011-08-20 05:46 +0000
        Re: try... except with unknown error types John Nagle <nagle@animats.com> - 2011-08-20 13:15 -0700
      Re: try... except with unknown error types Paul Rubin <no.email@nospam.invalid> - 2011-08-20 12:18 -0700
        Re: try... except with unknown error types Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-21 06:14 +1000
          Re: try... except with unknown error types Paul Rubin <no.email@nospam.invalid> - 2011-08-21 11:26 -0700
            Re: try... except with unknown error types Chris Angelico <rosuav@gmail.com> - 2011-08-21 20:17 +0100
              Re: try... except with unknown error types Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-22 10:30 +1000
                Re: try... except with unknown error types Chris Angelico <rosuav@gmail.com> - 2011-08-22 01:41 +0100
                Re: try... except with unknown error types Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-22 14:01 +1000
                Re: try... except with unknown error types Paul Rubin <no.email@nospam.invalid> - 2011-08-23 00:21 -0700
                Re: try... except with unknown error types Chris Angelico <rosuav@gmail.com> - 2011-08-23 09:26 +0100
                Re: try... except with unknown error types gene heskett <gheskett@wdtv.com> - 2011-08-23 04:43 -0400
                Re: try... except with unknown error types Paul Rubin <no.email@nospam.invalid> - 2011-08-23 10:43 -0700
                Re: try... except with unknown error types Chris Angelico <rosuav@gmail.com> - 2011-08-23 10:07 +0100
                Re: try... except with unknown error types John Nagle <nagle@animats.com> - 2011-08-31 21:22 -0700
            Re: try... except with unknown error types Ethan Furman <ethan@stoneleaf.us> - 2011-08-21 12:22 -0700
            Re: try... except with unknown error types Terry Reedy <tjreedy@udel.edu> - 2011-08-21 15:52 -0400
              Re: try... except with unknown error types Chris Torek <nospam@torek.net> - 2011-08-31 21:01 +0000
                Re: try... except with unknown error types Stefan Krah <stefan-usenet@bytereef.org> - 2011-09-09 23:41 +0200
                Re: try... except with unknown error types Nobody <nobody@nowhere.com> - 2011-09-10 10:33 +0100
                Re: try... except with unknown error types Peter Otten <__peter__@web.de> - 2011-09-10 12:17 +0200
            Re: try... except with unknown error types Roy Smith <roy@panix.com> - 2011-08-21 17:14 -0400
            Re: try... except with unknown error types Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-22 10:25 +1000
              Re: try... except with unknown error types Roy Smith <roy@panix.com> - 2011-08-21 22:09 -0400
            Re: try... except with unknown error types Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-08-23 18:33 +1000

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